virt: sev-guest: Explicitly leak pages in unknown state (Linux Linux)

CVE-2026-64104
HIGH 8.7

En bref

Source
NVD
EPSS
EPSS 0.17 % · centile 6 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: virt: sev-guest: Explicitly leak pages in unknown state When set_memory_{encrypted,decrypted}() fail, the user cannot know at which point the function failed, meaning that the pages are left in an unknown state from the point of view of the caller. Since the pages may be left in an unencrypted state, they are not suitable for general use, and cannot be returned safely to the buddy allocator. Avoid the issue by never freeing the pages, and then do the proper accounting by calling snp_leak_pages().

Faiblesses (CWE)

  • CWE-401 — Mémoire non libérée après sa durée de vie utile

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 8.7CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:LLinux
CVSS 3.1HIGH 8.7CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:LNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 3e385c0d6ce88ac9916dcf84267bd5855d830748 < bee400ad4f4259c9c0758e4f1960a1eed6f6f9f0 ; affected 3e385c0d6ce88ac9916dcf84267bd5855d830748 < 3d0cd0065deeb054b4b29236432e851806b7cc81 ; affected 3e385c0d6ce88ac9916dcf84267bd5855d830748 < fd948c3f96b18ff9ba7d3e8eae13d196593e1aaf ; affected 0b16521f95c875e79d657cb8d6911c15080dbb80 ; affected 6.13.8 < 6.14
Linux · Linuxaffected 6.14 ; unaffected 0 < 6.14 ; unaffected 6.18.34 ≤ 6.18.* ; unaffected 7.0.11 ≤ 7.0.* ; unaffected 7.1 ≤ *

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD